If I want to set up raid 0 do I have to format my hard drive? Also will I see any improved performance on a pair of western digital caviar blacks? I'm talking FPS or in game performance (while playing and carrying out actions in the game) here not shaving 0.5 off a loading time.
More aboutformat hard drive raid
Yes you will have to format the drive and install the RAID drivers. Quicker access times, but not more frames per second. More FPS comes from a better video card.